<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      p {
        height: 200px;
        background-color: antiquewhite;
      }
    </style>
  </head>
  <body>
    <p>hello p1</p>
    <p>hello p2</p>
    <p>hello p3</p>
    <p>hello p4</p>
    <p>hello p5</p>
    <p>hello p6</p>
    <p>hello p7</p>
    <p>hello p8</p>
    <script>
      setInterval(() => {
        console.log("run");
        // window.scrollTo({
        //   left: 0,
        //   top: 300,
        //   behavior: "smooth",
        // });
        window.scrollBy({
          left: 0,
          top: 300,
          behavior: "smooth",
        });
        // window.scrollTo(0, 300);
        // window.scrollBy(0, 100);
      }, 2000);
    </script>
  </body>
</html>
